Verfahren zum Steuern eines Gleichstromantriebs

摘要

The proposed method of controlling a direct current drive, in particular a direct current door drive, involves the determination of two variables of state of the direct current drive, these variables being used to determine a load or resistance moment acting on the direct current drive. Said load or resistance moment is then compared with a predetermined load or resistance moment. An abnormal situation is present if the load or resistance moment thus determined exceeds the predetermined load or resistance moment.